From: Pavel Machek <pavel@ucw.cz>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Amireddy Mallikarjuna reddy"
<mallikarjunax.reddy@linux.intel.com>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Marek Behún" <marek.behun@nic.cz>,
"Abanoub Sameh" <abanoubsameh8@gmail.com>,
"Dan Murphy" <dmurphy@ti.com>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 21/28] leds: lm3697: Make error handling more robust
Date: Fri, 28 May 2021 12:10:57 +0200 [thread overview]
Message-ID: <20210528101057.GH2209@amd> (raw)
In-Reply-To: <20210510095045.3299382-22-andy.shevchenko@gmail.com>
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On Mon 2021-05-10 12:50:38, Andy Shevchenko wrote:
> It's easy to miss necessary clean up, e.g. firmware node reference counting,
> during error path in ->probe(). Make it more robust by moving to a single
> point of return.
>
> Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
You are now putting the handle even in the success case. Is that
right?
Pavel
> ---
> drivers/leds/leds-lm3697.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/leds/leds-lm3697.c b/drivers/leds/leds-lm3697.c
> index 9d35dd2a9bf0..6262ae69591e 100644
> --- a/drivers/leds/leds-lm3697.c
> +++ b/drivers/leds/leds-lm3697.c
> @@ -224,14 +224,12 @@ static int lm3697_probe_dt(struct lm3697 *priv)
> ret = fwnode_property_read_u32(child, "reg", &control_bank);
> if (ret) {
> dev_err(dev, "reg property missing\n");
> - fwnode_handle_put(child);
> goto child_out;
> }
>
> if (control_bank > LM3697_CONTROL_B) {
> dev_err(dev, "reg property is invalid\n");
> ret = -EINVAL;
> - fwnode_handle_put(child);
> goto child_out;
> }
>
> @@ -262,7 +260,6 @@ static int lm3697_probe_dt(struct lm3697 *priv)
> led->num_leds);
> if (ret) {
> dev_err(dev, "led-sources property missing\n");
> - fwnode_handle_put(child);
> goto child_out;
> }
>
> @@ -287,7 +284,6 @@ static int lm3697_probe_dt(struct lm3697 *priv)
> &init_data);
> if (ret) {
> dev_err(dev, "led register err: %d\n", ret);
> - fwnode_handle_put(child);
> goto child_out;
> }
>
> @@ -295,6 +291,7 @@ static int lm3697_probe_dt(struct lm3697 *priv)
> }
>
> child_out:
> + fwnode_handle_put(child);
> return ret;
> }
>
--
http://www.livejournal.com/~pavelmachek
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next prev parent reply other threads:[~2021-05-28 10:11 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-10 9:50 [PATCH v1 00/28] leds: cleanups and fwnode refcounting bug fixes Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 01/28] leds: class: The -ENOTSUPP should never be seen by user space Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 02/28] leds: core: " Andy Shevchenko
2021-05-28 10:03 ` Pavel Machek
2021-05-28 10:43 ` Andy Shevchenko
2021-05-29 9:42 ` Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 03/28] leds: el15203000: Give better margin for usleep_range() Andy Shevchenko
2021-05-28 10:04 ` Pavel Machek
2021-05-28 10:45 ` Andy Shevchenko
2021-05-29 9:41 ` Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 04/28] leds: el15203000: Make error handling more robust Andy Shevchenko
2021-05-28 20:59 ` Oleh Kravchenko
2021-05-10 9:50 ` [PATCH v1 05/28] leds: el15203000: Correct headers (of*.h -> mod_devicetable.h) Andy Shevchenko
2021-05-28 21:00 ` Oleh Kravchenko
2021-05-29 9:45 ` Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 06/28] leds: el15203000: Introduce to_el15203000_led() helper Andy Shevchenko
2021-05-28 21:01 ` Oleh Kravchenko
2021-05-10 9:50 ` [PATCH v1 07/28] leds: lgm-sso: Fix clock handling Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 08/28] leds: lgm-sso: Put fwnode in any case during ->probe() Andy Shevchenko
2021-05-28 10:08 ` Pavel Machek
2021-05-28 10:46 ` Andy Shevchenko
2021-05-29 9:28 ` Andy Shevchenko
2021-05-29 10:46 ` Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 09/28] leds: lgm-sso: Don't spam logs when probe is deferred Andy Shevchenko
2021-05-28 10:11 ` Pavel Machek
2021-05-28 10:47 ` Andy Shevchenko
2021-05-29 9:54 ` Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 10/28] leds: lgm-sso: Remove unneeded of_match_ptr() Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 11/28] leds: lgm-sso: Remove explicit managed resource cleanups Andy Shevchenko
2021-05-28 10:09 ` Pavel Machek
2021-05-28 10:49 ` Andy Shevchenko
2021-05-29 9:46 ` Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 12/28] leds: lgm-sso: Drop duplicate NULL check for GPIO operations Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 13/28] leds: lgm-sso: Convert to use list_for_each_entry*() API Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 14/28] leds: lm3532: select regmap I2C API Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 15/28] leds: lm3532: Make error handling more robust Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 16/28] leds: lm36274: Put fwnode in error case during ->probe() Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 17/28] leds: lm36274: Correct headers (of*.h -> mod_devicetable.h) Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 18/28] leds: lm3692x: Put fwnode in any case during ->probe() Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 19/28] leds: lm3692x: Correct headers (of*.h -> mod_devicetable.h) Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 20/28] leds: lm3697: Update header block to reflect reality Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 21/28] leds: lm3697: Make error handling more robust Andy Shevchenko
2021-05-28 10:10 ` Pavel Machek [this message]
2021-05-28 10:50 ` Andy Shevchenko
2021-05-29 9:50 ` Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 22/28] leds: lm3697: Don't spam logs when probe is deferred Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 23/28] leds: lp50xx: Put fwnode in error case during ->probe() Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 24/28] leds: lt3593: Put fwnode in any " Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 25/28] leds: lt3593: Make use of device properties Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 26/28] leds: pwm: Make error handling more robust Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 27/28] leds: rt8515: Put fwnode in any case during ->probe() Andy Shevchenko
2021-05-10 9:50 ` [PATCH v1 28/28] leds: sgm3140: " Andy Shevchenko
2021-05-28 10:14 ` Pavel Machek
2021-05-28 10:59 ` Andy Shevchenko
2021-05-29 9:58 ` Andy Shevchenko
2021-05-17 7:30 ` [PATCH v1 00/28] leds: cleanups and fwnode refcounting bug fixes Andy Shevchenko
2021-05-24 14:56 ` Andy Shevchenko
2021-05-24 17:49 ` Pavel Machek
2021-05-24 18:39 ` Andy Shevchenko
2021-05-28 10:02 ` Pavel Machek
2021-05-28 11:05 ` Andy Shevchenko
2021-05-28 20:34 ` Pavel Machek
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